> 6 5
> A<D
> B<C
> A<B
> D<E
> C<D
> 
> 6 6
> A<D
> B<C
> E<F
> B<A
> D<E
> A<B
> 
> 6 6
> D<E
> B<F
> A<D
> F<C
> A<F
> E<B
> 
> 3 3
> A<B
> B<C
> C<A
> 
> 4 6
> A<B
> A<C
> B<C
> C<D
> B<D
> A<B
> 
> 3 2
> A<B
> B<A
> 
> 2 2
> A<B
> B<A
> 
> 26 1
> A<Z
> 
> 0 0
> 
> ============================结果=============================
> 
> 6 5
> A<D
> B<C
> A<B
> D<E
> C<D
> Sorted sequence cannot be determined.
> 
> 6 6
> A<D
> B<C
> E<F
> B<A
> D<E
> A<B
> Inconsistency found after 6 relations.
> 
> 6 6
> D<E
> B<F
> A<D
> F<C
> A<F
> E<B
> Sorted sequence determined after 6 relations: ADEBFC.
> 
> 3 3
> A<B
> B<C
> C<A
> Sorted sequence determined after 2 relations: ABC.
> 
> 4 6
> A<B
> A<C
> B<C
> C<D
> B<D
> A<B
> Sorted sequence determined after 4 relations: ABCD.
> 
> 3 2
> A<B
> B<A
> Inconsistency found after 2 relations.
> 
> 2 2
> A<B
> B<A
> Sorted sequence determined after 1 relations: AB.
> 
> 26 1
> A<Z
> Sorted sequence cannot be determined.
> 
> 0 0